Mathematical models indicate that ____ galaxies are produced by high speed collisions in which a smaller galaxy passes through another galaxy almost perpendicular to the disk of the galaxy
a. ring
b. spiral
c. antenna
d. irregular
e. tidal tail
A
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A heat engine has an efficiency of 35.0% and receives 150 J of heat per cycle
(a) How much work does it do in each cycle? (b) How much heat does it "waste" in each cycle? What will be an ideal response?
When we speak of the large-scale structure of the universe, we mean
A) the structure of any large galaxy. B) the structure of any individual cluster of galaxies. C) the overall shape of the observable universe. D) the overall arrangement of galaxies, chains of galaxies, and galactic sheets in the universe.
Of the three types of nuclear decay, only __________ does not affect the atomic number of the nucleus
Fill in the blank(s) with correct word
The wavelength of the emitted photon if an electron in the hydrogen atom makes a transition from the n = 2 state to the ground state is closest to which of the following values?
(c = 3.0 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J) A) 122 nm B) 203 nm C) 243 nm D) 389 nm E) 411 nm